LNG富氧燃烧电厂[火用]及[火用]经济分析  

Exergy and Exergy-economic Analysis of LNG Oxygen-enriched Combustion Power Plant

作　　者：程泽扬 蔡磊[1] 吴谋亮 刘文斌[1] 管延文[1] 王旭 谭丽坪 CHENG Zeyang;CAI Lei;WU Mouliang;LIU Wenbin;GUAN Yanwen;WANG Xu;TAN Liping

机构地区：[1]华中科技大学环境科学与工程学院,湖北武汉430074 [2]中国建筑西南设计研究院有限公司,四川成都610041 [3]佛燃能源集团股份有限公司,广东佛山528000

出　　处：《煤气与热力》2022年第1期V0001-V0009,V0023,共10页Gas & Heat

摘　　要：利用[火用]及[火用]经济分析方法,应用Aspen Plus模拟软件定量研究H_(2)O和CO_(2)作为稀释剂时对LNG富氧燃烧系统(O_(2)/H_(2)O燃烧系统和O_(2)/CO_(2)燃烧系统)的能耗及经济性的影响。结果表明:O_(2)/CO_(2)燃烧系统的总[火用]效率为51.12%,高于O_(2)/H_(2)O燃烧系统的36.35%;O_(2)/CO_(2)燃烧系统可避免[火用]损率为19.97%,远高于O_(2)/H_(2)O燃烧系统的11.99%。从系统整体而言,在保持系统进料及燃烧条件相同的条件下,O_(2)/CO_(2)燃烧系统[火用]效率更高,从能耗角度来讲,CO_(2)更适合作为LNG富氧燃烧系统的稀释剂,以CO_(2)作为稀释剂可以提高富氧燃烧系统各个组件的优化潜力。Using exergy and exergy-economic analysis methods,Aspen Plus simulation software is used to quantitatively study the impact of H_(2)O and CO_(2) as diluents on the energy consumption and economy of LNG oxygen-enriched combustion system(O_(2)/H_(2)O combustion system and O_(2)/CO_(2) combustion system).The results show that the total exergy efficiency of O_(2)/CO_(2) combustion system is 51.12%,which is higher than 36.35%of O_(2)/H_(2)O combustion system.The avoidable exergy loss rate of O_(2)/CO_(2) combustion system is 19.97%,which is much higher than 11.99%of O_(2)/H_(2)O combustion system.As a whole,the O_(2)/H_(2)O combustion system has higher exergy efficiency while maintaining the same system feed and combustion conditions,From the perspective of energy consumption,CO_(2) is more suitable as the diluent of LNG oxygen-enriched combustion system,and using CO_(2) as the diluent can improve the optimization potential of various components of the oxygen-enriched combustion system.

关 键 词：LNG富氧燃烧 稀释剂 系统特性 [火用]分析 [火用]经济分析 

分 类 号：TM611[电气工程—电力系统及自动化]